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Astra F (1991-1998, petrol) Astra G (1998-2004, petrol) Astra G (1998-2004) Astra H (2004-2009) Astra J (2009-2015, petrol)
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  • Astra J
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  • Clutch
  • Replacing the clutch release master cylinder

Replacing the clutch release master cylinder (Opel Astra J)

            0

You will need: a 13 mm socket head and a flat-blade screwdriver.

1. Disconnect the wire from the negative terminal of the battery.

1. Disconnect the wire from the negative terminal of the battery.


2. Remove the cap from the brake master cylinder reservoir…

2. Remove the cap from the brake master cylinder reservoir…


3. …and pump out, for example, using a large medical syringe, the brake fluid from the section of the master cylinder reservoir that supplies the clutch release hydraulic drive.

Note: The reservoir, common to the brake and clutch master cylinders, consists of three separate sections: two for the separate brake hydraulic circuits and one for the clutch hydraulic circuit.


Note: The reservoir, common to the brake and clutch master cylinders, consists of three separate…


4. Remove the battery (see Removal and installation the battery).



4. Remove the battery (see Removal and installation the battery).


5. Remove the battery mounting shelf (see Removal and installation the battery mounting shelf).

5. Remove the battery mounting shelf (see Removal and installation the battery mounting shelf).


6. Use a screwdriver to pry the expansion tank mounting clip off the bracket…

6. Use a screwdriver to pry the expansion tank mounting clip off the bracket…


7. …remove the retainer…

7. …remove the retainer…


8. …and move the tank to the side without disconnecting the hoses from it and without draining the coolant.



Note: Removal of the expansion tank is necessary to gain access to the clutch master cylinder.


Note: Removal of the expansion tank is necessary to gain access to the clutch master cylinder.


9. Disconnect the clutch release master cylinder feed hose from the master brake cylinder reservoir pipe.

9. Disconnect the clutch release master cylinder feed hose from the master brake cylinder reservoir…


10. Use a screwdriver to pry up the spring retainer of the clutch release master cylinder damper...

10. Use a screwdriver to pry up the spring retainer of the clutch release master cylinder damper...


11. …raise the lock to its highest position…



11. …raise the lock to its highest position…


12. …and disconnect the damper from the master cylinder.

12. …and disconnect the damper from the master cylinder.


13. Under the instrument panel, unscrew the two nuts securing the clutch release master cylinder to the body panel.

13. Under the instrument panel, unscrew the two nuts securing the clutch release master cylinder to…


14. Disconnect the clutch master cylinder push rod from the clutch pedal by squeezing the push rod retainer tabs…

Note: For clarity, shown with the pedal assembly removed.




Note: For clarity, shown with the pedal assembly removed.


15. …and remove the master cylinder.

15. …and remove the master cylinder.


16. Disconnect the feed hose from the master cylinder.

17. Install the parts in the reverse order of removal and bleed the hydraulic drive (see Bleeding the clutch release hydraulic drive).


This article is available at russian, bulgarian, belarusian, ukrainian, serbian, croatian, romanian, polish, slovak, hungarian
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Previous articles
Opel Astra J: Clutch
Next articles

Replacing the clutch release drive slave cylinder with bearing
Removal and installation the clutch
Replacing the working fluid in the clutch release hydraulic drive
Bleeding the clutch release hydraulic drive
Checking the Clutch Release Pedal Travel
Possible clutch malfunctions
Replacing the clutch release hydraulic line
Removal and installation the clutch pedal


See similar ones from other Opel car manuals:
▶ Replacing the clutch master cylinder Opel Insignia A (2008-2017)
▶ Removal and installation the clutch master cylinder Opel Corsa C (2000-2006)
▶ Replacing the release bearing and clutch release lever Opel Kadett D (1979-1984)
▶ Clutch release cylinder — removal and installation Opel Omega B2 (1999-2003)
▶ Removal and installation the clutch master cylinder Opel Vectra C (2002-2008)
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Astra J (2009-2015, petrol) 
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Astra G (1998-2004) 
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